package day02;

import java.awt.image.Kernel;

public class DoubleDemo {
    public static void main(String[] args) {

        //3. double : 双精度浮点型，8个字节
        double a=3.14;//3.14作为小直数接量，默认为double
        float b=3.14F;

        double c=3.0,d=2.9;
        System.out.println(c-d);//0.10000000000000009,发生了舍入误差了
        double e=6.0,f=4.9;
        System.out.println(e-f);//1.0999999999999996，发生舍入误差了
        double g=6.0,h=1.9;
        System.out.println(g-h);//4.1，没有发生舍入误差

        double j=6.8F;
        System.out.println(j);
        long k=6;
        System.out.println(k);


    }
}
